Note 27 Construction contracts

Worked-up income not yet invoiced

Group, MSEK	2017	2016
Worked-up income on incomplete contracts	36,706	29,525
Invoiced sales on incomplete contracts	-34,325	-26,869
Total	2,381	2,656

Invoiced income not yet worked-up

Group, MSEK	2017	2016
Invoiced sales on incomplete contracts	45,467	39,710
Worked-up income on incomplete contracts	-39,210	-33,801
Total	6,257	5,909

Worked-up income from ongoing contracts is reported by applying the percentage of completion method. The degree of recognition is calculated on the basis of the project costs incurred at the end of the period in relation to the project costs corresponding to the project income for the whole project.

Contract assignments are reported in gross on the balance sheet project for project, either as Worked-up income not yet invoiced in current assets or as Invoiced income not yet worked-up in current liabilities. Projects that have higher worked-up income than the amounts invoiced are reported as assets, while projects that have been invoiced for more than the income worked-up are reported as liabilities.